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CONTENTS
1.0
INTRODUCTION
The Tecpro system is a 'two-wire' or 'party line' system which enables a number of personnel to take part
in the same conversation simultaneously. Major applications are in the theatre, television studios,
conference venues and stadiums.
The Tecpro MS745 master station allows two intercom circuits A and B to be created and each circuit can
power up to a maximum of 30 belt-packs, or a mix of belt-packs and loudspeaker stations.
System cabling should be a twisted pair with an overall screen and the cabling can radiate out from a
central distribution point or looped from one outstation to the next and so on. A combination of both
methods is often used.
The Tecpro MS745 is compatible with original Tecpro products.
2.0
FEATURES
Two independent intercom circuits A and B
•
Circuits A and B may be linked to form a single circuit
•
Supports up to 30 Tecpro belt-packs or 7 Tecpro loudspeaker outstations per circuit
•
Short circuit and overload protection on each circuit
•
XLR4 input for optional headset
•
'Remote Mic Kill' feature can close all open mics on a selected circuit (Tecpro 2 outstations only)
•
AUX audio input switchable between mic or line level sensitivity for 'show relay' audio purposes
•
02-107 (Issue 2) 11/09
TECPRO MS745 MASTER STATION
Product Code 27-745
Designed and manufactured in the UK
Canford Audio Plc
Crowther Road
Washington
Tyne and Wear
www.canford.co.uk
Section 1.0
Introduction
Section 2.0
Features
Section 3.0
Section 4.0
Section 5.0
Section 6.0
Section 7.0
NE38 0BW
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Table of Contents
Summary of Contents for TECPRO MS745
- Page 1 Major applications are in the theatre, television studios, conference venues and stadiums. The Tecpro MS745 master station allows two intercom circuits A and B to be created and each circuit can power up to a maximum of 30 belt-packs, or a mix of belt-packs and loudspeaker stations.
- Page 2 Headphone Level Control Headphone Level Control When listening to outstations and belt When listening to outstations and belt-packs, you can plug in a Tecpro headset int in a Tecpro headset into the XLR4 connector and use the headphone level control. P e the headphone level control.
- Page 3 An auxiliary input is provided to allow a ‘show relay’ or cue audio feed to be mixed o to be mixed onto the Tecpro system. To control the level of auxiliary audio on the system there is a front panel system. To control the level of auxiliary audio on the system there is a front panel AUX system.
- Page 4 The DC CALL header PL20 has two link positions: CALL header PL20 has two link positions: When a call signal is sent When a call signal is sent onto any circuit from the MS745 onto any circuit from the MS745 a DC voltage is sent. This is necessary...
- Page 5 TECHNICAL SPECIFICATION Microphone 200 ohm dynamic type Headset earphone 400 ohm typical – 32 ohm to 4k ohm acceptable System output voltage +24V DC System line termination impedance 200 ohm in the audio frequency band, 5k ohm at DC Auxiliary Input XLR3 balanced, mic/line, +24V phantom power Call signal DC and 20kHz...
- Page 6 Pin 4 Earphones signal BP116, BP117 XLR5 Pin 1 Microphone screen Pin 2 Microphone signal Pin 3 Earphones common Pin 4 Left earphone Pin 5 Right earphone Figure 10 – Internal View Of MS745 Main PCB Layout 02-107 (Issue 2) 11/09...
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